package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.apis.article.IArticleClient;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.*;
import java.util.stream.Collectors;

/**
 * author Link
 *
 * @version 1.0
 * @date 2025/4/8  16:56
 */
@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {

    @Autowired
    private WmNewsMapper wmNewsMapper;

    /**
     * 自媒体文章审核
     * @param id  自媒体文章id
     */

    @Override
    @Async //标明当前方法是一个异步方法
    public void autoScanWmNews(Integer id) {
        WmNews wmNews = wmNewsMapper.selectById(id);
        if(wmNews==null){
            throw new RuntimeException("WmNewsAutoScanServiceImpl--文章不存在");
        }

        if(wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())){
            //从内容中提取纯文本内容和图片
            Map<String, Object> textAndImages = handleTextAndImages(wmNews);

            //自管理的敏感词过滤
            boolean isSensitiveScan = handleSensitiveScan((String) textAndImages.get("content"),wmNews);
            if(!isSensitiveScan)return;

            //审核文本
            boolean isTestScan= handleTextScan((String) textAndImages.get("content"),wmNews);
            if (!isTestScan)return;

            //审核图片
            boolean isImageScan= handleImageScan((List<String>) textAndImages.get("image"),wmNews);
            if (!isImageScan)return;

            //审核成功，保存app端的相关文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);

            if (!responseResult.getCode().equals(200)){
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核：保存app端的相关文章数据失败");
            }

            //回填article的id
            wmNews.setArticleId((Long) responseResult.getData());

            //修改状态
            updateWmNews(wmNews,(short) 9,"审核成功");
            log.info("审核成功,已发布！:{}",id);
        }
    }

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;

    /**
     * 自管理的敏感词审核
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleSensitiveScan(String content, WmNews wmNews) {

        boolean flag=true;

        //1.获取所有的敏感词
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
        List<String> sensitives = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());
        //2.初始化敏感词库
        SensitiveWordUtil.initMap(sensitives);
        //3.查看文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if(map.size()>0){
            //存在敏感词，修改审核状态为审核失败
            updateWmNews(wmNews,(short) 2,"审核失败，内容存在敏感词"+map);
            flag=false;
        }
        return flag;
    }

    /**
     * 修改文章内容
     * @param wmNews
     * @param status
     * @param reason
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    @Autowired
    private IArticleClient articleClient;
    @Autowired
    private WmChannelMapper wmChannelMapper;
    @Autowired
    private WmUserMapper wmUserMapper;
    /**
     * 保存app端的相关文章数据
     * @param wmNews
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {

        ArticleDto dto = new ArticleDto();

        //属性拷贝
        BeanUtils.copyProperties(wmNews,dto);

        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if(wmChannel!=null){
            dto.setChannelName(wmChannel.getName());
        }
        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if(wmUser!=null){
            dto.setAuthorName(wmUser.getName());
        }

        //设置文章id
        if(wmNews.getArticleId()!=null){
            dto.setId(wmNews.getArticleId());
        }

        dto.setCreatedTime(new Date());

        return articleClient.saveArticle(dto);
    }

    /**
     * 审核图片
     * @param image
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> image, WmNews wmNews) {
        //1.下载图片到minio
        //2.审核图片

        return true;
    }


    /**
     * 审核文本
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {
        //1.阿里云自动审核
        //2.修改wmnews的状态
        return true;
    }

    /**
     * 从内容中提取纯文本内容和图片
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {

        //储存纯文本内容
        StringBuilder text = new StringBuilder();
        //储存图片路径
        List<String> images = new ArrayList<>();

        List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);

        for (Map map : maps) {
            if (map.get("type").equals("text")){
                text.append(map.get("value"));
            }
            if(map.get("type").equals("image")){
                images.add((String) map.get("value"));
            }
        }
        //2.提取文章的封面图片
        if(StringUtils.isNotBlank(wmNews.getImages())){
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }

        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("content",text.toString());
        resultMap.put("images",images);
        return resultMap;
    }
}















